EP0805932B1 - Liner for insertion in pipes - Google Patents

Liner for insertion in pipes Download PDF

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Publication number
EP0805932B1
EP0805932B1 EP96939887A EP96939887A EP0805932B1 EP 0805932 B1 EP0805932 B1 EP 0805932B1 EP 96939887 A EP96939887 A EP 96939887A EP 96939887 A EP96939887 A EP 96939887A EP 0805932 B1 EP0805932 B1 EP 0805932B1
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EP
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Prior art keywords
pinion
teeth
guide
strip
clamping
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Expired - Lifetime
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EP96939887A
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German (de)
French (fr)
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EP0805932A1 (en
Inventor
Eckhard Graf
Jürgen Graf
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Uhrig Kanaltechnik GmbH
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Uhrig Kanaltechnik GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/163—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe

Definitions

  • the invention relates to a seal inner sleeve for insertion in Pipes for sealing leaks, consisting of a ring-shaped, expandable band made of sheet steel, the band ends of which are in Overlap circumferential direction with at least one locking device in Shape of an arranged at the inner band end in the circumferential direction Slot, one longitudinal edge of which carries a row of teeth, and one on the outside Belt end rotatably mounted tension pinion, which engages in the row of teeth, and a locking member that is under the action of a spring element and engages in the teeth of the pinion.
  • the invention is used in the rehabilitation of pipelines. With help of inner seal sleeves can leak from underground installed pipes made of concrete or another material repaired without digging become.
  • the object of the invention is to design an inner seal sleeve with a locking device that allows very small locking steps and thus, after the expansion has taken place, a firm, permanent concern at the Inner pipe wall with high pressure effect on the sealing elements guaranteed.
  • seal inner sleeve is used the design described at the beginning, and the task is solved by the characterizing features of claim 1.
  • Inner seal sleeve 1 is made of a resilient material, preferably a sheet of stainless steel, and it has the shape of a ring-shaped, more or less wide band, the inner band end 2 from the outer band end 3 in the circumferential direction is overlapped a great deal.
  • This sealing sleeve 1 can on the Leakage can be expanded by suitable devices so that they are at the Tight inside of the pipe to be sealed.
  • the inner sealing collar 1 is expediently provided with a (not shown) Hose made of rubber-elastic, durable material completely covered, and they can on this hose in the area of their two ends wear at least one all-round sealing tape (not shown).
  • the sealing sleeve 1 has a locking device 4 with a locking member whose job it is to expand them after they have expanded Keep condition in the long run.
  • This locking device 4 is made from a wide, provided at the inner band end 2 in the circumferential direction Slot 5, the two longitudinal edges 6 and 7 the same rows of teeth 8 and 9 wear, from a tension pinion 10, a guide pinion 11 and one Locking pinion 12.
  • the tension pinion 10 is rotatably mounted on the outer band end 3 and engages in a row of teeth 8.
  • the guide pinion 11 is spaced apart the pinion 10 is also rotatably mounted on the outer band end 3 and meshes with the second row of teeth 9 of the slot 5, which of the first row of teeth 8 is opposite.
  • the locking pinion 12 serves as a locking element, which under the action of a spring element stands and engages in the teeth of the pinion 10.
  • This lock pinion 12 is rotatably supported on the outer band end 3 and can be moved along it Surface are shifted, the axis of rotation of the locking pin 12 always is perpendicular to the surface of the outer band end 3.
  • a hold-down 13 is fastened with two pins 14, 15 to the outer band end 3. He dominates the two longitudinal edges 6 and 7 of the slot 5, partially covers that Locking pinion 12 and serves to guide it during its displacement.
  • the tension pinion 10, the guide pinion 11 and the locking pinion 12 have the same Number of teeth.
  • the connecting line 16 of the axes of rotation of the pinion 10 and Guide pinions 11 are perpendicular to the longitudinal axis of the slot 5.
  • the tension pinion 10 is higher than the guide pinion 11 and the locking pinion 12, and protrudes at least twice in the axial direction. This makes possible an actuator (not shown) - approximately in the form of a plug receptacle a screwdriver from a screwdriver - the clamping pinion 10 to grasp and drive, causing the inner seal boot to expand 1 is effected. This expansion can also be done with a seal in the inner seal imported inflatable air bag happen in this In this case, tension pinion 10, guide pinion 11 and locking pinion 12 are of the same height.
  • the tension spring 17 is wrapped around the stub axle 20 of the guide pinion 11, which causes the locking pinion 12 to move continuously during its displacements holds in engagement with the guide pinion 11 and a positive guidance of the Locking pinion 12 produces as a planet gear around the guide pinion 11. At the same time the tension spring 17 resiliently presses the locking pinion 12 into the intermediate space 21 the tension pinion 10 and the guide pinion 11, which is smaller than that Diameter of the root circle 22 of the locking pin 12.
  • the tension pinion 10 moves on the tooth row 8 of the inside Along the end of the belt and thereby moves the outer end of the belt 3.
  • the locking pinion 12 is therefore forced to rotate in the same direction as that Clamping pinion 10, which is why these two pinions are not in their movement Can remain intervention.
  • Each revolution of the pinion 10 locks each tooth of the pinion 10 once at the point of intervention.
  • the locking pinion 12 and also locks according to the number of teeth of the guide pinion 11. Since it is a shifting of the teeth - not a rolling - at the point of engagement and the movement of the teeth are opposite, the number of grid steps is added.
  • This mechanism thus has double that of known devices - or depending on the geometry - a multiple number of grid levels.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Joints With Sleeves (AREA)
  • Braking Arrangements (AREA)

Abstract

PCT No. PCT/EP96/05146 Sec. 371 Date Jul. 11, 1997 Sec. 102(e) Date Jul. 11, 1997 PCT Filed Nov. 12, 1996 PCT Pub. No. WO97/21054 PCT Pub. Date Jun. 12, 1997An inside sealing sleeve 1 comprised of an expandable steel band for insertion in leaking pipes in need of repair is provided with an arresting arrangement 4 which permits very small detent steps. For this purpose, the internal band end 2 is provided with a slot 5 having two rows of teeth 8, 9, while a tensioning pinion 10, a guide pinion 11 and a locking pinion 12 are rotatably seated on the external band end 3. A tensioning spring 17 engages the pivot axle of the locking pinion 12, it keeps the locking pinion 12 in engagement with the guide pinion 11 and pushes it into the gap 21 between locking pinion 10 and guide pinion 11.

Description

Die Erfindung bezieht sich auf eine Dichtungsinnenmanschette zum Einsetzen in Rohre zwecks Abdichtung von Leckstellen, bestehend aus einem ringförmig zusammengebogenen, aufweitbaren Band aus Stahlblech, dessen Bandenden sich in Umfangsrichtung überlappen, mit wenigstens einer Arretierungsvorrichtung in Gestalt eines am innenliegenden Bandende in Umfangsrichtung angeordneten Schlitzes, dessen eine Längskante eine Zahnreihe trägt, und einem am außenliegenden Bandende drehbar gelagerten Spannritzel, welches in die Zahnreihe eingreift, sowie einem Rastorgan, das unter Einwirkung eines Federelements steht und in die Zahnung des Spannritzels eingreift.The invention relates to a seal inner sleeve for insertion in Pipes for sealing leaks, consisting of a ring-shaped, expandable band made of sheet steel, the band ends of which are in Overlap circumferential direction with at least one locking device in Shape of an arranged at the inner band end in the circumferential direction Slot, one longitudinal edge of which carries a row of teeth, and one on the outside Belt end rotatably mounted tension pinion, which engages in the row of teeth, and a locking member that is under the action of a spring element and engages in the teeth of the pinion.

Die Erfindung wird angewandt bei der Sanierung von Rohrleitungen. Mit Hilfe von Dichtungsinnenmanschetten können Undichtigkeitsstellen von unterirdisch verlegten Rohren aus Beton oder einem anderen Werkstoff ohne Grabarbeiten repariert werden.The invention is used in the rehabilitation of pipelines. With help of inner seal sleeves can leak from underground installed pipes made of concrete or another material repaired without digging become.

Es ist bekannt, Leckstellen von Rohren vom Rohrinnern her abzudichten. Hierzu dienen spiralig zusammengebogene, gummiüberzogene und mit besonderen Dichtungsringen versehene Manschetten aus federelastischen, korrosionsbeständigem Stahlblech, welche in das zu dichtende Rohr bis zur Stelle der Undichtigkeit eingebracht werden. Dort werden sie mittels eines aufblasbaren Luftkissens oder einer mechanischen Montiereinrichtung so lange aufgeweitet, bis sie sich unter Zusammenpressen der Dichtungsringe sehr eng an die Rohrinnenwand angelegt haben. Eine Arretierungsvorrichtung, umfassend ein mit einer Zahnreihe kämmendes Ritzel und einen in dessen Zähne eingreifenden, federnden Sperriegel hält die Dichtungsmanschette in ihrer aufgeweiteten Stellung. Nachteilig ist jedoch hierbei, daß die erzielbaren Rastschritte des Ritzels aufgrund der vorgegebenen Ritzelzahnung so groß sind, daß - nach bis zur Grenzbelastung durchgeführter Aufweitung - sich der Umfang der Manschette zwangsläufig um bis zu einem ganzen Rastschritt wieder verkleinert, was die gewünschte Abdichtung und das Zusammendrücken der Dichtungen mangels festpressenden Anliegens an der Rohrinnenwand in Frage stellt (DE 44 01 318 A1, DE 93 18 409 U1).It is known to seal pipe leaks from the inside of the pipe. For this serve spirally bent, rubber-coated and with special Seals provided with sealing rings made of resilient, corrosion-resistant Sheet steel, which in the pipe to be sealed up to the point of leakage be introduced. There they are inflated using an air cushion or a mechanical mounting device until it pressing the sealing rings very tightly against the inner pipe wall to have. A locking device comprising one with a row of teeth intermeshing pinion and a resilient locking bolt engaging in its teeth holds the gasket in its expanded position. The disadvantage is however, here that the achievable locking steps of the pinion due to the predetermined Pinion teeth are so large that - after carried out up to the limit load Widening - the circumference of the cuff inevitably increases by up to a whole rest step down again, what the desired seal and the compression of the seals for lack of a tight fit on the inner tube wall in question (DE 44 01 318 A1, DE 93 18 409 U1).

Die Aufgabe der Erfindung besteht in der Konzeption einer Dichtungsinnenmanschette mit einer Arretierungsvorrichtung, welche sehr kleine Rastschritte gestattet und damit nach erfolgter Aufweitung ein festes, dauerhaftes Anliegen an der Rohrinnenwand bei hoher Preßwirkung auf die Dichtorgane gewährleistet.The object of the invention is to design an inner seal sleeve with a locking device that allows very small locking steps and thus, after the expansion has taken place, a firm, permanent concern at the Inner pipe wall with high pressure effect on the sealing elements guaranteed.

Zur Lösung der gestellten Aufgabe wird von einer Dichtungsinnenmanschette der eingangs beschriebenen Bauart ausgegangen, und gelöst wird die Aufgabe durch die kennzeichnenden Merkmale des Patentanspruchs 1.To solve the task, a seal inner sleeve is used the design described at the beginning, and the task is solved by the characterizing features of claim 1.

Mit Hilfe des unter der Einwirkung der Spannfeder stehenden, als Riegel wirkenden Sperritzel wird erreicht, daß nach erfolgtem Aufweiten die Spannung der Dichtungsinnenmanschette nach Einrasten des Sperriegels in das Spannritzel nahezu vollständig erhalten bleibt, was die Voraussetzung für ein ausgezeichnetes Abdichten der Leckstelle ist.With the help of the tension spring acting as a bolt Locking pinion is achieved that the tension of the Inner sealing collar almost after the locking bolt has snapped into the tension pinion remains completely intact, which is the prerequisite for an excellent Sealing the leak is.

Vorteilhafte Ausgestaltungen des Erfindungsgegenstandes sind den Unteransprüchen 2 bis 5 zu entnehmen.Advantageous refinements of the subject matter of the invention are the subclaims 2 to 5.

Die Erfindung wird nachstehend anhand der beiden beigefügten Zeichnungsblätter näher erläutert. Dabei zeigen

Figur 1
eine Teilansicht einer Dichtungsinnenmanschette, perspektivisch dargestellt;
Figur 2
einen Ausschnitt der Dichtungsmanschette nach Figur 1 mit der Arretierungsvorrichtung, in einer Draufsicht wie in Figur 1 angedeutet, in vergrößertem Maßstab.
The invention is explained below with reference to the two accompanying drawings. Show
Figure 1
a partial view of an inner seal, shown in perspective;
Figure 2
a section of the sealing sleeve according to Figure 1 with the locking device, in a plan view as indicated in Figure 1, on an enlarged scale.

Die dargestellte, zum Einsetzen in Rohre zum Abdichten von Leckstellen vorgesehene Dichtungsinnenmanschette 1 besteht aus einem federelastischen Material, vorzugsweise einem Blech aus nichtrostendem Stahl, und sie besitzt die Form eines ringförmig zusammengebogenen, mehr oder weniger breiten Bandes, dessen innenliegendes Bandende 2 vom außenliegenden Bandende 3 in Umfangsrichtung ein großes Stück überlappt wird. Diese Dichtungsmanschette 1 kann an der Leckstelle durch geeignete Vorrichtungen aufgeweitet werden, so daß sie an der Innenseite des zu dichtenden Rohres stramm anliegt.The one shown, intended for insertion into pipes for sealing leaks Inner seal sleeve 1 is made of a resilient material, preferably a sheet of stainless steel, and it has the shape of a ring-shaped, more or less wide band, the inner band end 2 from the outer band end 3 in the circumferential direction is overlapped a great deal. This sealing sleeve 1 can on the Leakage can be expanded by suitable devices so that they are at the Tight inside of the pipe to be sealed.

Die Dichtungsinnenmanschette 1 ist zweckmäßigerweise mit einem (nicht dargestellten) Schlauch aus gummielastischem, beständigem Material vollständig überzogen, und sie kann auf diesem Schlauch im Bereich ihrer beiden Enden mindestens ein ringsum laufendes Dichtungsband (nicht dargestellt) tragen.The inner sealing collar 1 is expediently provided with a (not shown) Hose made of rubber-elastic, durable material completely covered, and they can on this hose in the area of their two ends wear at least one all-round sealing tape (not shown).

Die Dichtungsmanschette 1 weist eine Arretierungsvorrichtung 4 mit einem Rastorgan auf, dessen Aufgabe es ist, sie nach ihrem erfolgten Aufweiten im aufgeweiteten Zustand auf Dauer zu halten. Diese Arretierungsvorrichtung 4 besteht aus einem breiten, am innenliegenden Bandende 2 in umfangsrichtung vorgesehenen Schlitz 5, dessen beide Längskanten 6 und 7 gleich ausgebildete Zahnreihen 8 und 9 tragen, aus einem Spannritzel 10, einem Führungsritzel 11 und einem Sperritzel 12.The sealing sleeve 1 has a locking device 4 with a locking member whose job it is to expand them after they have expanded Keep condition in the long run. This locking device 4 is made from a wide, provided at the inner band end 2 in the circumferential direction Slot 5, the two longitudinal edges 6 and 7 the same rows of teeth 8 and 9 wear, from a tension pinion 10, a guide pinion 11 and one Locking pinion 12.

Das Spannritzel 10 ist am außenliegenden Bandende 3 drehbar gelagert und greift in die eine Zahnreihe 8 ein. Das Führungsritzel 11 ist im Abstand neben dem Spannritzel 10 ebenfalls am äußeren Bandende 3 drehbar gelagert und kämmt mit der zweiten Zahnreihe 9 des Schlitzes 5, welche der ersten Zahnreihe 8 gegenüberliegt.The tension pinion 10 is rotatably mounted on the outer band end 3 and engages in a row of teeth 8. The guide pinion 11 is spaced apart the pinion 10 is also rotatably mounted on the outer band end 3 and meshes with the second row of teeth 9 of the slot 5, which of the first row of teeth 8 is opposite.

Das Sperritzel 12 dient als Rastorgan, das unter der Einwirkung eines Federelements steht und in die Zahnung des Spannritzels 10 eingreift. Dieses Sperritzel 12 liegt auf dem außenliegenden Bandende 3 drehbar auf und kann entlang dessen Oberfläche verschoben werden, wobei die Drehachse des Sperritzels 12 immer senkrecht zur Oberfläche des außenliegenden Bandendes 3 steht. Ein Niederhalter 13 ist mit zwei Stiften 14, 15 am außenliegenden Bandende 3 befestigt. Er überragt die beiden Längskanten 6 und 7 des Schlitzes 5, überdeckt teilweise das Sperritzel 12 und dient zu dessen Führung bei seiner Verschiebung.The locking pinion 12 serves as a locking element, which under the action of a spring element stands and engages in the teeth of the pinion 10. This lock pinion 12 is rotatably supported on the outer band end 3 and can be moved along it Surface are shifted, the axis of rotation of the locking pin 12 always is perpendicular to the surface of the outer band end 3. A hold-down 13 is fastened with two pins 14, 15 to the outer band end 3. He dominates the two longitudinal edges 6 and 7 of the slot 5, partially covers that Locking pinion 12 and serves to guide it during its displacement.

Das Spannritzel 10, das Führungsritzel 11 und das Sperritzel 12 besitzen die gleiche Zähnezahl. Die Verbindungslinie 16 der Drehachsen von Spannritzel 10 und Führungsritzel 11 stehen senkrecht zur Längsachse des Schlitzes 5. The tension pinion 10, the guide pinion 11 and the locking pinion 12 have the same Number of teeth. The connecting line 16 of the axes of rotation of the pinion 10 and Guide pinions 11 are perpendicular to the longitudinal axis of the slot 5.

Das Spannritzel 10 ist höher als das Führungsritzel 11 und das Sperritzel 12, und überragt diese in axialer Richtung um wenigstens das Doppelte. Dies ermöglicht einer Betätigungsvorrichtung (nicht gezeichnet) - etwa in Gestalt einer Steckaufnahme eines Schraubwerkzeuges von einem Drehschrauber - das Spannritzel 10 zu ergreifen und anzutreiben, wodurch das Aufweiten der Dichtungsinnenmanschette 1 bewirkt wird. Dieses Aufweiten kann aber auch mit einem in die Dichtungsinnenmanschette eingeführten aufpumpbaren Luftsack geschehen, in diesem Fall sind Spannritzel 10, Führungsritzel 11 und Sperritzel 12 gleich hoch.The tension pinion 10 is higher than the guide pinion 11 and the locking pinion 12, and protrudes at least twice in the axial direction. this makes possible an actuator (not shown) - approximately in the form of a plug receptacle a screwdriver from a screwdriver - the clamping pinion 10 to grasp and drive, causing the inner seal boot to expand 1 is effected. This expansion can also be done with a seal in the inner seal imported inflatable air bag happen in this In this case, tension pinion 10, guide pinion 11 and locking pinion 12 are of the same height.

Bei dem Federelement, unter dessen Einwirkung das Sperritzel 12 steht, handelt es sich um eine U-förmig gebogene Spannfeder 17, die am außenliegenden Bandende 3, nämlich am zum Beispiel angenieteten Stift 15, befestigt ist, wozu sie eine Öse 18 trägt. Mit ihrem freien Ende, welches rechtwinklig abgebogen ist, greift die Spannfeder 17 in eine zentrische Bohrung im Sperritzel 12 ein.In the spring element, under the action of which the locking pinion 12 is acting it is a U-shaped curved tension spring 17, which is at the outer end of the band 3, namely on the riveted pin 15, for example, for which it is attached Eyelet 18 carries. With its free end, which is bent at right angles, engages the tension spring 17 in a central bore in the locking pinion 12.

Die Spannfeder 17 ist um den Achsstummel 20 des Führungsritzels 11 geschlungen, was bewirkt, daß sie das Sperritzel 12 während seiner Verschiebungen dauernd im Eingriff mit dem Führungsritzel 11 hält und eine Zwangsführung des Sperritzels 12 als Planetenrad um das Führungsritzel 11 herstellt. Zugleich drückt die Spannfeder 17 das Sperritzel 12 federnd in den Zwischenraum 21 zwischen dem Spannritzel 10 und dem Führungsritzel 11, welcher kleiner ist als der Durchmesser des Fußkreises 22 des Sperritzels 12.The tension spring 17 is wrapped around the stub axle 20 of the guide pinion 11, which causes the locking pinion 12 to move continuously during its displacements holds in engagement with the guide pinion 11 and a positive guidance of the Locking pinion 12 produces as a planet gear around the guide pinion 11. At the same time the tension spring 17 resiliently presses the locking pinion 12 into the intermediate space 21 the tension pinion 10 and the guide pinion 11, which is smaller than that Diameter of the root circle 22 of the locking pin 12.

Die Funktion und die Wirkungsweise der Arretierungsvorrichtung ist folgende:The function and the mode of operation of the locking device are as follows:

Durch Drehen bewegt sich das Spannritzel 10 an der Zahnreihe 8 des innenliegenden Bandendes entlang und verschiebt dabei das äußere Bandende 3.By turning, the tension pinion 10 moves on the tooth row 8 of the inside Along the end of the belt and thereby moves the outer end of the belt 3.

Da die Vorrichtung auf dem außenliegenden Bandende 3 montiert ist, bewegt sich die gesamte Vorrichtung ebenfalls relativ zum innenliegenden Bandende 2. Dabei rollt das Führungsritzel 11 zwangsweise an der zweiten Zahnreihe 9 entlang ab. Durch die feste Kopplung zwischen Führungsritzel 11 und Sperritzel 12 wird das Sperritzel 12 ebenfalls zu einer Drehbewegung gezwungen. Since the device is mounted on the outer band end 3, moves the entire device is also relative to the inner band end 2. The guide pinion 11 inevitably rolls along the second row of teeth 9 from. Due to the fixed coupling between guide pinion 11 and locking pinion 12 the locking pinion 12 is also forced to rotate.

Das Sperritzel 12 dreht sich also zwangsweise mit gleichem Drehsinn wie das Spannritzel 10, weshalb diese beiden Ritzel während ihrer Bewegung nicht im Eingriff bleiben können.The locking pinion 12 is therefore forced to rotate in the same direction as that Clamping pinion 10, which is why these two pinions are not in their movement Can remain intervention.

Wird versucht, das Spannritzel 10 in Sperrichtung zu drehen, so kommt es in den Eingriffspunkten zwischen dem Spannritzel 10 und dem Sperritzel 12, sowie zwischen dem Führungsritzel 11 und dem Sperritzel 12 zu entgegengesetzten Kräften, die sich blockieren. Der Mechanismus hält die beiden Bandenden 2 und 3 also in ihrer gegenwärtigen Position.If you try to turn the tension pinion 10 in the reverse direction, it comes into the Points of engagement between the tension pinion 10 and the locking pinion 12, and between the guide pinion 11 and the locking pinion 12 to opposing forces, who are blocking themselves The mechanism therefore holds the two ends 2 and 3 in their current position.

Soll das Spannritzel 10 in Spannrichtung gedreht werden, dann machen die geometrischen Verhältnisse der Arretierungsvorrichtung ein Ausweichen des Sperrritzels 12 gegenüber dem Spannritzel 10 möglich: Das Spannritzel 10 und das Sperritzel 12 drehen sich gleichsinnig, wodurch das Sperritzel 12 gegen die Federkraft der Spannfeder 17 aus dem Eingriff mit dem Spannritzel 10 gedrückt wird und nach einer Versetzung um jeweils einen Zahn wieder in den Eingriff mit dem Spannritzel 10 springt. Während der Verlagerung der Drehachse des Sperritzels 12 drehen sich das Führungsritzel 11 und das Spannritzel 12 weiterhin gegensinnig und bleiben im Eingriff.If the clamping pinion 10 is to be rotated in the clamping direction, then the geometrical ones Ratios of the locking device avoiding the locking pinion 12 compared to the tension pinion 10 possible: The tension pinion 10 and that Locking pinion 12 rotate in the same direction, whereby the locking pinion 12 against the spring force the tension spring 17 pressed out of engagement with the tension pinion 10 and after an offset by one tooth in the engagement again jumps with the pinion 10. During the displacement of the axis of rotation of the Locking pinion 12, the guide pinion 11 and the tension pinion 12 continue to rotate opposite and remain in engagement.

Bei einer Umdrehung des Spannritzels 10 arretiert also jeder Zahn des Spannritzels 10 einmal am Eingriffspunkt. Gleichzeitig dreht sich das Sperritzel 12 und arretiert ebenfalls entsprechend der Zähnezahl des Führungsritzels 11. Da es sich um ein Versetzen der Zähne - nicht um ein Abrollen - im Eingriffspunkt handelt und die Bewegung der Zähne entgegengesetzt sind, addiert sich die Zahl der Rasterstufen.Each revolution of the pinion 10 locks each tooth of the pinion 10 once at the point of intervention. At the same time, the locking pinion 12 and also locks according to the number of teeth of the guide pinion 11. Since it is a shifting of the teeth - not a rolling - at the point of engagement and the movement of the teeth are opposite, the number of grid steps is added.

Dieser Mechanismus weist somit gegenüber bekannten Vorrichtungen die doppelte - bzw. je nach Geometrie - eine vielfache Anzahl von Rasterstufen auf. This mechanism thus has double that of known devices - or depending on the geometry - a multiple number of grid levels.

Zusammenstellung der BezugszeichenCompilation of the reference symbols

11
DichtungsinnenmanschetteInner gasket
22nd
Bandende (innenliegendes)Band end (inside)
33rd
Bandende (außenliegendes)Band end (outside)
44th
Arretierungsvorrichtung (siehe Figur 2)Locking device (see FIG. 2)
55
Schlitzslot
66
Längskante (erste)Long edge (first)
77
Längskante (zweite)Long edge (second)
88th
Zahnreihe (erste)Row of teeth (first)
99
Zahnreihe (zweite)Row of teeth (second)
1010th
SpannritzelTension pinion
1111
FührungsritzelGuide pinion
1212th
SperritzelLocking pinion
1313
NiederhalterHold-down
1414
Stiftpen
1515
Stiftpen
1616
VerbindungslinieConnecting line
1717th
SpannfederTension spring
1818th
Öseeyelet
1919th
(freies) Ende(free) end
2020th
AchsstummelStub axle
2121
ZwischenraumSpace
2222
FußkreisFoot circle

Claims (5)

  1. Sealing inner sleeve (1) for insertion into pipes for the purpose of sealing leaks, consisting of an expansible sheet-steel strip bent into a ring shape, the ends (2, 3) of which strip overlap one another in the circumferential direction,
    having at least one arresting device (4) in the form of a slot (5) arranged in the circumferential direction on the inner-lying end (2) of the strip, one longitudinal edge (6) of which slot has a row of teeth (8), and
    having a clamping pinion (10) rotatably mounted on the outer-lying end (3) of the strip, which pinion (10) engages the row of teeth (8), and
    having a locking means which is acted upon by a spring element and engages the teeth of the clamping pinion (10),
    characterised by the following features:
    a second row of teeth (9) on the second longitudinal edge (7) of the slot (5), which second row lies opposite the first row of teeth (8),
    a guide pinion (11) which is rotatably mounted on the outer-lying end (3) of the strip next to the clamping pinion (10) and at a distance therefrom and meshes with the second row of teeth (9),
    a blocking pinion (12) as locking means, which is rotatably and displaceably arranged next to the clamping pinion (10) and the guide pinion (11) on the outer-lying end (3) of the strip,
    a tension spring (17) as the spring element, which is attached to the outer-lying end (3) of the strip and the free end (19) of which engages the rotational axis of the blocking pinion (12),
    the tension spring (17) holds the blocking pinion (12) in engagement with the guide pinion (11),
    the tension spring (17) presses the blocking pinion (12) into the interspace (21) between the clamping pinion (10) and the guide pinion (11).
  2. Sealing inner sleeve according to claim 1, characterised by a holding-down device (13), which is attached to the outer-lying end (3) of the strip, which projects over the longitudinal edges (6, 7) of the slot (5) and below which the blocking pinion (12) can be displaced.
  3. Sealing inner sleeve according to claim 1 or 2, characterised in that the clamping pinion (10), the guide pinion (11) and the blocking pinion (12) have the same numbers of teeth.
  4. Sealing inner sleeve according to any one of claims 1 to 3, characterised in that a line (16) connecting the rotational axes of clamping pinion (10) and guide pinion (11) lies perpendicular to the longitudinal axis of the slot (5).
  5. Sealing inner sleeve according to any one of claims 1 to 4, characterised in that the clamping pinion (10) projects to a height at least twice that of the guide pinion (11) and the blocking pinion (12).
EP96939887A 1995-12-01 1996-11-22 Liner for insertion in pipes Expired - Lifetime EP0805932B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19544877 1995-12-01
DE19544877A DE19544877C1 (en) 1995-12-01 1995-12-01 Sealing inner sleeve for insertion in pipe to seal leak points
PCT/EP1996/005146 WO1997021054A1 (en) 1995-12-01 1996-11-22 Liner for insertion in pipes

Publications (2)

Publication Number Publication Date
EP0805932A1 EP0805932A1 (en) 1997-11-12
EP0805932B1 true EP0805932B1 (en) 2001-01-10

Family

ID=7778952

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96939887A Expired - Lifetime EP0805932B1 (en) 1995-12-01 1996-11-22 Liner for insertion in pipes

Country Status (7)

Country Link
US (1) US5769459A (en)
EP (1) EP0805932B1 (en)
JP (1) JPH10513539A (en)
KR (1) KR100312071B1 (en)
AT (1) ATE198646T1 (en)
DE (2) DE19544877C1 (en)
WO (1) WO1997021054A1 (en)

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DE202012012667U1 (en) 2012-11-23 2013-08-09 GRAF Patentverwertungs GbR (vertretungsberechtigte Gesellschafter: Jürgen Graf, 78073 Bad Dürrheim, Joachim Graf, 78073 Bad Dürrheim) Inner seal with improved locking mechanism
DE202013103336U1 (en) 2013-06-04 2013-08-13 GRAF Patentverwertungs GbR (vertretungsberechtigte Gesellschafter: Jürgen Graf, 78073 Bad Dürrheim, Joachim Graf, 78073 Bad Dürrheim) Sealing inner sleeve with deformable intermediate section
DE102012111341B3 (en) * 2012-11-23 2014-04-10 GRAF Patentverwertungs GbR (vertretungsberechtigte Gesellschafter: Jürgen Graf, 78073 Bad Dürrheim, Joachim Graf, 78073 Bad Dürrheim) Sealing inner cuff for sealing local leakage in pipe, has blocking pinions assigned as locking elements and pressed on spring element against instep pinions so that blocking pinion is held with instep pinion and engaged to tooth series
DE102013210365A1 (en) 2013-06-04 2014-12-04 GRAF Patentverwertungs GbR (vertretungsberechtigte Gesellschafter: Jürgen Graf, 78073 Bad Dürrheim, Joachim Graf, 78073 Bad Dürrheim) Sealing inner sleeve with deformable intermediate section
DE202016101481U1 (en) 2016-03-17 2016-03-29 Hans Bohnet Gasket for insertion into a piping system
DE202018100823U1 (en) 2018-02-15 2018-05-16 Hans Bohnet Gasket for insertion into a piping system
WO2020001929A1 (en) * 2018-06-28 2020-01-02 Christoph Wenk Sealing device and associated inner sleeve

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US6709021B2 (en) 2001-10-16 2004-03-23 D.J. Mielke, Inc. Tubular member coupling device
US6832786B2 (en) 2001-10-16 2004-12-21 D.J. Mielke, Inc. Tubular member coupling device
US20080193221A1 (en) * 2005-03-16 2008-08-14 Je Kun Lee Reinforcing Materials For Repairing Underground Water Pipeline Without Excavation And Method For Repairing Thereof
CA2716219A1 (en) * 2009-09-29 2011-03-29 Press-Seal Gasket Corporation Collapsible expansion mechanism for effecting a seal
DE102009047863A1 (en) * 2009-09-30 2011-03-31 Uhrig Kanaltechnik Gmbh Sealing inner sleeve and use
CA2734855C (en) 2010-03-23 2014-07-15 Press-Seal Gasket Corporation Expansion ring assembly
DE202010013588U1 (en) 2010-09-24 2010-11-25 Uhrig Kanaltechnik Gmbh Detachable gasket for insertion into pipes
DE202014101548U1 (en) 2014-04-01 2014-07-08 Kurt Kanal- Und Rohrtechnik Gmbh Set for rehabilitating a canal
DE102014111916B4 (en) * 2014-08-20 2016-07-21 GRAF Patentverwertungs GbR (vertretungsberechtigte Gesellschafter: Jürgen Graf, 78073 Bad Dürrheim, Joachim Graf, 78073 Bad Dürrheim) Sealing inner sleeve with retaining element
CN105240644B (en) * 2015-07-31 2018-01-02 厦门安越非开挖工程技术股份有限公司 A kind of pipe crack prosthetic device and restorative procedure
US9951578B2 (en) * 2015-10-20 2018-04-24 Baker Hughes, A Ge Company, Llc Radially expandable ratchet locking borehole barrier assembly
DE102016006561B4 (en) 2016-05-25 2022-07-28 Uhrig Kanaltechnik Gmbh Sealing sleeve for pipe offsets
CN108169114B (en) * 2017-12-29 2023-09-05 浙江大学 Self-locking tensioning device for reinforcing steel bar non-uniform corrosion auxiliary electrode limiter
WO2019211879A1 (en) * 2018-04-30 2019-11-07 Kristinsson Jon Gudni Object holding rim
DE102020122833B3 (en) 2020-09-01 2021-09-23 Amex Sanivar Ag Inner sealing sleeve for insertion in pipes
US11808003B2 (en) * 2021-02-01 2023-11-07 Hydro-Klean, Llc Method of rehabilitating a manhole
US11655927B2 (en) 2021-06-14 2023-05-23 Hydratech Engineered Products, Llc Apparatus and methods for internal sealing of pipe systems
US11643801B1 (en) * 2021-12-29 2023-05-09 Gulf Coast Underground, LLC System and method for sealing an annular space of a sewer connection line

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WO2014079955A1 (en) 2012-11-23 2014-05-30 Graf Patentverwertungs Gbr Inner seal collar with improved locking mechanism
DE202012012667U1 (en) 2012-11-23 2013-08-09 GRAF Patentverwertungs GbR (vertretungsberechtigte Gesellschafter: Jürgen Graf, 78073 Bad Dürrheim, Joachim Graf, 78073 Bad Dürrheim) Inner seal with improved locking mechanism
DE102012111341B3 (en) * 2012-11-23 2014-04-10 GRAF Patentverwertungs GbR (vertretungsberechtigte Gesellschafter: Jürgen Graf, 78073 Bad Dürrheim, Joachim Graf, 78073 Bad Dürrheim) Sealing inner cuff for sealing local leakage in pipe, has blocking pinions assigned as locking elements and pressed on spring element against instep pinions so that blocking pinion is held with instep pinion and engaged to tooth series
CN105393040A (en) * 2013-06-04 2016-03-09 格拉夫专利管理协会 Sealing inner sleeve having a deformable intermediate section
DE102013210365A1 (en) 2013-06-04 2014-12-04 GRAF Patentverwertungs GbR (vertretungsberechtigte Gesellschafter: Jürgen Graf, 78073 Bad Dürrheim, Joachim Graf, 78073 Bad Dürrheim) Sealing inner sleeve with deformable intermediate section
WO2014194886A1 (en) 2013-06-04 2014-12-11 Graf Patentverwertungs Gbr Sealing inner sleeve having a deformable intermediate section
DE202013103336U1 (en) 2013-06-04 2013-08-13 GRAF Patentverwertungs GbR (vertretungsberechtigte Gesellschafter: Jürgen Graf, 78073 Bad Dürrheim, Joachim Graf, 78073 Bad Dürrheim) Sealing inner sleeve with deformable intermediate section
DE202016101481U1 (en) 2016-03-17 2016-03-29 Hans Bohnet Gasket for insertion into a piping system
DE202016104723U1 (en) 2016-03-17 2016-10-07 Hans Bohnet Gasket for insertion into a piping system
WO2017157693A1 (en) 2016-03-17 2017-09-21 Bohnet, Hans Gasket for inserting into a pipeline system
DE202018100823U1 (en) 2018-02-15 2018-05-16 Hans Bohnet Gasket for insertion into a piping system
US11346486B2 (en) 2018-02-15 2022-05-31 Hans Bohnet Sealing sleeve for inserting into a piping system
WO2020001929A1 (en) * 2018-06-28 2020-01-02 Christoph Wenk Sealing device and associated inner sleeve
DE102018115678A1 (en) 2018-06-28 2020-01-02 Christoph Wenk Sealing device and associated inner sleeve
US11525536B2 (en) 2018-06-28 2022-12-13 Christoph Wenk Sealing device and associated inner sleeve

Also Published As

Publication number Publication date
JPH10513539A (en) 1998-12-22
US5769459A (en) 1998-06-23
EP0805932A1 (en) 1997-11-12
KR100312071B1 (en) 2001-12-12
DE19544877C1 (en) 1996-10-02
WO1997021054A1 (en) 1997-06-12
KR19980701722A (en) 1998-06-25
DE59606311D1 (en) 2001-02-15
ATE198646T1 (en) 2001-01-15

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